Mechanism



3, M. woPwoon.

REGULAHNG MEGHAMSM.

APPLICATBON FILED mnzs, 19x9.

Patented May 4, 1920.

2' SHEETS-SHEET I.

.F'IEJ WiTNESSES INVENTOR J. HOPWOOD.

REGULATING MECHANISM.

APPLICATION FILED APR.26,1919.

Patented May 4, 1920.

2 SHEETS-SHEET 2.

WITNESSES worm, G EOh-HIONT, PEKIQ'NFJYLVANIA.

MECHANISIVI.

To all whom may cone-em:

Be it known. there i, JOHN llrl. lilorwcoo, residing e); 9023116113 inthe county of Exile gl 3 sud @Zsteof fie sylveuiu, u citizen or theUnited blesses, huve iriveuscd or d1s-- covered certain new audusefulllmpr'oveiuenlz-s in liegulusiug lilQClRuHh-JZIL, oi' which improvementsthe following is e specificalziou.

Hcrelzofore conarolliug; mechanism or regulating niechui sin of the typeto which the invention desoribed here's pertains, was opby and inaccordance with the ssure of s, fluid or by end in accordance 1 changesin the dill'ereuce between the si'mc end dynamic pressure off a fluidllow-- i through a pipe or conduit, and hence her of them have beencapable of fully meeting all the conditions required 111 coin;

or regulating; mechanism employed 1; rolling V the flow oi lllllilSunder in connection with pressure 'ihe inveuiion describel herein has{or its object a construction for controlling or regulating i t by andin. accordance with changes in the pressure of fluid but also by and inaccordance with chan es in the rate of iiow oi: o, fluid under press :7The invention is hereiuefer more fully desiu'iled and claimed.

in the ucconumiuyiug drawings forming per l of this specilicutioii,Figure l is a View partly in elevation and pa tly in section of myimproved regulsobing mechanism, and Fig. 52 11 top plum view of theseine.

in lhe practice oi the invention, two diaphruguis are arrangedintermediate :1 cap piece preferably formed ii'ilaegrul with she bedplate 3 oi "the mechanism, and e shell ie the diaphrugms being spaced.zisuitable dist-unceupurt by an annulus Each diaphragm preferablyconsists of a ring (5 arranged between flexible members 7 and 8 acentral transmitting block 9 and a series of: rings 10 arranged betweenthe block and the SPRClIl rings 5 as described and claimed in Letters iiuieut 1,094,116, dated April iZ-lsa 191%, to Francis H. Brown. Thechamber 2 above the upper diaphragm is so connected by a pipe 11 to a,fluid conduct iiig pipe or conduit C time the upper side of thediuphrsgm will be subjected to static pressure modified by the dynamicpressure of the sfireum flowing along the conduit,

Specification of Letters Eateut.

mechanism operative not only While the chamber 5 intermediate thediephrsgms is so connected by a pipe 12 to the. pipe or conduit *1)that; :1 pressure equal to and varying with the static pressure of thefluid in ihe pipe or conduit will be mainiaihcel therein. The undersideof the lower diaphragm is subjected to a constant pressure substantiallyequal to the normal static pressure of the fluid in' the pipe orconduit. This pressure'is applied through a fluid cushion formed in theshell l in which is placed an inverted cup 13 and the shell filled witha suitable liquid. In charging the shell. with liquid, air will beentrapped in the cup, thereby forming a resilient cushion operative onthe underside of the lower diaphragm. in order that the desired pressuremay be established inthe shell the pipe 12 which is in communication, usshown in Fig. l, with the fluid conducsing pipe 6, is connecied by 2ivalved branch pipe ll "0 the interior of the shell. As soon as thedesired pressure has been established in the shell, the -valve of thebranch 14: is closed so that thereafter the underside of the lowerdiaphragm will be subjected to a constant but yielding pressuresubstantially equal to the normal pressure in the conduit. The (blocks9) of the diephragms are o ieretively connected to the respective levers15 end 16, as shown and described in the patent above referred to.

AS in the couslzructiou described, the upper diaphragm is subjectedonboth sides to the some static pressure as ill not have any effect-"chemobut us the pressure on the upper side. is the static pressure plus orminus the (if; ium ic pressure dependent on the arrangement of the Pitottube in the pipe (Many-change in the rate of flow of the fluid in us;pipe C will cause an incremental movement of the diaphragm proportionalto such change in flow. Hence by connecting frhe lever 15by a rod 17 toa suitable indicating and recording mecha nism 18, an eilicieut flowmeter is formed.

The lever 15 is connected by e rod 19 to a frame 20 pivotally mounted ata and in the frame is mounted o shaft 21 provided with arms and 22% Thearm 22 extends to Word the pivotal point of the frame and is connectedto a stem 2A of the movable member of the valve mechanism 25 preferablyin the pipe 1 or conduit C; any changes in such pressu'g'k Patented May4:, 1920" 'miieetiou filed April 2c, 1919. Serial No. eezeue.

'5, dated J uno The mm is upper end a, link 2? so .uy aiii'fwig ihe 1;;1pm? or ioweir e lower Hie \rjiiikbkil with ii the ed e5; opposite emitsby ion .SOL 30, said cylinder t "e mechanism (in the frame is oil whichis mljustabiy Wi ieii ezm be shifted by as the serevfiiQ to any of ihevyliiidei duly mounted 2. shoe mi to upper ei'ui of :28 which ispivot-lily emi. B -firm by the memise oi iii-{E x'uive .ue is moved upor he 2211526. to slide 'eby .sii'fis the upper 26 an. immune 'iiie kindor bar eyiiiidei'. By this mg member, iLilG :1 m1 the arm. 22 in a of.ihe plQViUUS fr "e 20, thereby dosing out any li'iovenient of herepeated, (a, tire ion or the other A P85. diaphragm due of flow and bya n: vision iii) oi ejyiin- V of the valve a m. i

in the pipe 1141155435, :1 come-- eim wil be roduced in the i ibei.interizw iii'ui Hie dinpin'zigin as \veii the eiiumbei' above the upperdim gm, but if there has; been no change in changes oi stmio pressurewiii not eei on iiM) upper diaphi'egn'i. z of static pressure'in theinieznmlioi v 'EXEHHIH'K, :i drop in pro sure in theiniermmiiecoeinnniiei, .x'iii poi?- ,mii, tile eonsmni', pressure belowthe lower diaphragm to opm'ziia-x to wise the luitei". This monmzent oithe diaphragm will siii'rfs he OHM}? o i oi the lever H1- Gmvnwzxrdiy21ml iiiei'ehj Q'iiii'i he be]! (trunk ievez' IH- so s to throw the armto \iilittil v'iiu lower emi of the swingin "her i is pivoeeii \aniwiiy;om Liio ing meinbei? xvii] shii'; Li 22mm and T23 so :23 go opemile themo 1, ale member oi, the wire meehmiism to so admit. sieuin, to the eyLmrlei' as to cause a moven'wm of the more the ehzimbez: snouid exceedtime of tile fluid.

\vai'diy, thereby causing reverse movement of the pilot vaive 1H7 wiiibe understood ihaf'a Nil-3Y8 "io piiot valve is shifted by a, miwemenio1e i: 20 or the boil crank lever 554: there will i e a. eompensu ingmovement for closing such waive on :1 small or ineromentai movement ofHie piston in eyiizuley 30,

I (:1 5:21 herein as my invenaion:

l regniaeing or controlling mechanism having in combination twodiepimigms, a fluid pressure cushion operative of one of iiiepiimgms afluid. pressure cylinder and pisioii, and valve mechanism controllingbiie ii, v; of fluid pressure to said bier and opeiai ive by both oftile pin-:1 g ns.

regulating 0L eonii'oiiing mechanism 111 comon operative on one side ofone of the diaphragins, a fluid pressure cylinder 111111 piston, 11valve iiiecimiiism for eomi'oiiing the flow of fluid under pressure tosaid cylinder, and opemiive by said (liapismgms and means for closingsaid valve mechanism on 22 predeermined movement of.

piston;

3. A regulating controlling mechanism having iii combination two (iie'ihragins, e fluid pressure cushion operative on one side of one of ihediaphragm, cylinder and piston, a veive mechanism for eontioili fiow offluid undo piessure is the cylinder and. operative by one of theciiaphmgms, a mechanism operative by the piston oi iiie cylinder and.embodying a. swinging member nested to the waive meci'ianisin and eonremsaid swinging member $0 the diaphragm. A regulating controllingmechanism having in combination two independently movable(iilpill'figifl8 one diapinngm opera time by and in accordance Wihchanges in ihe lymunio piessuie of a stream of fluid under pressure, Hiesecond diaphragm operative by and in eecordzince with changes in thestatic preesme of such fluid, zimi mechanism OpQifliliYB by boti:diiiifiiiliLgLflS.

5. A reguiziting or controlling meci enism having; in C-OUjlbiHHi/iiflla die iizraigm opera-- tive by and in. QCPOKKEAHCO with changes in thedymuuie pressure of a si i'ezlm oi fluid under pressure, a seconddiaphragm operative by and in aeeoi'dzmee with (changes in the staticpressure of such fluid, mechanism opmii-ive by fooiii diapiii'egms andmew-1s over-Latin: by Finch mechanism for controlling the iiiovemeui; oithe Miter.

forming between Mien: a, chamber whereby 6 intermediate on one sideadjacent faces of the diaphragms may be subjected to the staticcomponent of the total pressure of a stream of fluid under pressure,means for maintaining on the outer fuceof one of the diaphragms apressure substantially equal to the normal static pressure t such fluid,means whereby the outer face of the Other diaphragm will be subjected tochanges in'the dynamic pressure of such stream of fluid under pressure10 and mechanism operative by both diaphragrns.

In testimony whereof I have hereunto set my hand.

JOHN M. HOPWOOD.

